.page-about {
  --about-axis-w: 148px;
  --about-stage-pad: 26px 22px;
  padding-top: 0;
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .container {
  width: var(--shell);
  margin-inline: auto;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 2;
  margin-bottom: 26px;
}

.page-about .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 54px;
  background:
    radial-gradient(115% 85% at 88% -5%, rgba(213, 166, 74, 0.18), transparent 62%),
    linear-gradient(165deg, var(--ink-800) 0%, var(--ink-900) 68%);
  overflow: hidden;
}

.page-about .about-cover::after {
  content: "";
  position: absolute;
  right: -18%;
  top: 12%;
  width: 56%;
  height: 150%;
  background: repeating-linear-gradient(114deg, rgba(213, 166, 74, 0.16) 0 1px, transparent 1px 20px);
  transform: rotate(-8deg);
  opacity: 0.55;
  pointer-events: none;
}

.page-about .about-cover .container {
  position: relative;
  z-index: 1;
}

.page-about .cover-grid {
  display: grid;
  gap: 34px;
}

.page-about .cover-lead h1 {
  margin: 14px 0 0;
  font-size: clamp(34px, 8vw, 46px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  transform: skewX(-1.5deg);
  transform-origin: left bottom;
}

.page-about .cover-intro {
  margin: 20px 0 0;
  max-width: 40ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .cover-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  border-radius: var(--radius-panel);
  background: var(--glass);
  padding: 6px 16px 14px;
  border: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.page-about .cover-stat {
  padding: 14px 0 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .cover-num {
  display: block;
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold-soft);
  font-variant-numeric: tabular-nums;
}

.page-about .cover-unit {
  font-size: 15px;
  margin-left: 3px;
  color: var(--gold);
}

.page-about .cover-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--mist);
}

.page-about .cover-foot {
  grid-column: 1 / -1;
  margin: 10px 0 0;
  padding-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--green);
}

/* ---------- 历程 ---------- */
.page-about .journey {
  padding: 58px 0 62px;
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800) 140%);
}

.page-about .journey-intro {
  margin: 16px 0 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .journey-svg {
  display: none;
  width: 100%;
  height: auto;
  margin: 34px 0 6px;
}

.page-about .journey-path {
  stroke: var(--gold);
  stroke-width: 2;
  stroke-dasharray: 6 7;
  opacity: 0.85;
}

.page-about .journey-node {
  fill: var(--ink-900);
  stroke: var(--gold);
  stroke-width: 3;
}

.page-about .journey-node--now {
  fill: var(--gold);
  stroke: var(--gold-soft);
}

.page-about .journey-text {
  fill: var(--mist);
  font-size: 15px;
  font-family: var(--font-sans);
  letter-spacing: 0.04em;
}

.page-about .journey-text--now {
  fill: var(--gold-soft);
  font-family: var(--font-mono);
}

.page-about .journey-grid {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-about .axis {
  position: relative;
}

.page-about .axis-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: thin;
}

.page-about .axis-node {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  color: var(--mist);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .axis-node:hover,
.page-about .axis-node:focus-visible {
  color: var(--gold-soft);
  border-color: var(--gold);
  background: rgba(213, 166, 74, 0.1);
  outline: none;
}

.page-about .axis-year {
  color: var(--gold);
  font-size: 13.5px;
  font-weight: 600;
}

.page-about .stage {
  position: relative;
  background: var(--ink-800);
  border-radius: var(--radius-panel);
  padding: var(--about-stage-pad);
  margin-bottom: 16px;
  border-left: 2px solid rgba(213, 166, 74, 0.35);
}

.page-about .stage-title {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .stage p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 42ch;
}

.page-about .journey-figure {
  margin: 26px 0 0;
  border-radius: var(--radius-panel);
  overflow: hidden;
  background: var(--ink-700);
}

.page-about .journey-caption {
  padding: 12px 16px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
  background: var(--ink-800);
}

/* ---------- 团队 ---------- */
.page-about .team {
  padding: 58px 0 60px;
  background: var(--ink-800);
}

.page-about .team-grid {
  display: grid;
  gap: 28px;
}

.page-about .team-figure {
  margin: 0;
  border-radius: 4px 28px 4px 28px;
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-700), var(--ink-900));
}

.page-about .team-copy .section-title {
  margin-top: 12px;
}

.page-about .team-copy .prose {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 42ch;
}

.page-about .team-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .team-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
  color: var(--paper);
}

.page-about .team-k {
  flex: 0 0 62px;
  color: var(--gold);
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.page-about .link-arrow {
  display: inline-block;
  margin-top: 22px;
  color: var(--gold-soft);
  font-size: 14.5px;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .link-arrow:hover,
.page-about .link-arrow:focus-visible {
  color: var(--paper);
  border-color: var(--gold);
  outline: none;
}

/* ---------- 版本 ---------- */
.page-about .version {
  padding: 58px 0 60px;
  background: var(--ink-900);
}

.page-about .version-intro {
  margin: 16px 0 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .version-board {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .version-panel {
  background: var(--ink-800);
  border-radius: var(--radius-panel);
  padding: 24px 20px;
  border: 1px solid var(--line-soft);
}

.page-about .version-panel--now {
  background: linear-gradient(158deg, rgba(20, 52, 92, 0.92), var(--ink-800));
  border-color: var(--line);
  box-shadow: 0 18px 40px -28px rgba(213, 166, 74, 0.75);
}

.page-about .version-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.page-about .version-name {
  margin: 0;
  flex: 1 1 100%;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .version-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .version-list li {
  position: relative;
  padding: 10px 0 10px 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

.page-about .version-list li:first-child {
  border-top: none;
}

.page-about .version-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 19px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
}

.page-about .version-panel--now .version-list li {
  color: var(--paper);
}

.page-about .version-panel--now .version-list li::before {
  background: var(--green);
}

.page-about .version-link {
  display: none;
}

.page-about .version-note {
  margin: 22px 0 0;
  font-size: 13.5px;
  color: var(--mist);
  line-height: 1.7;
}

.page-about .version-note a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-about .version-note a:hover,
.page-about .version-note a:focus-visible {
  color: var(--paper);
  outline: none;
}

/* ---------- 合作生态 ---------- */
.page-about .ecology {
  position: relative;
  padding: 58px 0 54px;
  background:
    radial-gradient(80% 120% at 8% 10%, rgba(25, 195, 125, 0.14), transparent 58%),
    radial-gradient(70% 90% at 92% 82%, rgba(255, 106, 43, 0.12), transparent 62%),
    var(--ink-800);
  overflow: hidden;
}

.page-about .ecology-head {
  max-width: 60ch;
}

.page-about .ecology-intro {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ecology-nodes {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-about .eco-node {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num name"
    "tag tag";
  align-items: baseline;
  column-gap: 14px;
  row-gap: 6px;
  padding: 18px 20px;
  background: rgba(6, 19, 39, 0.62);
  border: 1px solid var(--line-soft);
  border-radius: 34px 4px 34px 4px;
  text-decoration: none;
  color: var(--paper);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .eco-node:hover,
.page-about .eco-node:focus-visible {
  border-color: var(--gold);
  background: rgba(20, 52, 92, 0.82);
  transform: translateY(-3px);
  outline: none;
}

.page-about .eco-num {
  grid-area: num;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .eco-name {
  grid-area: name;
  font-size: 15.5px;
  font-weight: 700;
}

.page-about .eco-tag {
  grid-area: tag;
  font-size: 12.5px;
  color: var(--mist);
  opacity: 0.55;
  transition: opacity 0.3s var(--ease), color 0.3s var(--ease);
}

.page-about .eco-node:hover .eco-tag,
.page-about .eco-node:focus-visible .eco-tag {
  opacity: 1;
  color: var(--green);
}

.page-about .eco-node--award .eco-num {
  color: var(--orange);
}

.page-about .eco-node--award:hover .eco-tag,
.page-about .eco-node--award:focus-visible .eco-tag {
  color: var(--gold-soft);
}

.page-about .ecology-figure {
  margin: 28px 0 0;
  border-radius: var(--radius-panel);
  overflow: hidden;
  background: var(--ink-700);
}

/* ---------- 承诺与入口 ---------- */
.page-about .commit {
  padding: 58px 0 66px;
  background: linear-gradient(180deg, var(--ink-900), var(--ink-800));
}

.page-about .commit-grid {
  display: grid;
  gap: 28px;
}

.page-about .commit-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .commit-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .commit-list strong {
  display: block;
  margin-bottom: 5px;
  color: var(--paper);
  font-weight: 800;
  font-size: 16px;
}

.page-about .commit-card {
  align-self: start;
  padding: 24px 22px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: 4px 34px 4px 34px;
}

.page-about .commit-card-title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  transform: skewX(-1.5deg);
  transform-origin: left center;
}

.page-about .commit-card-text {
  margin: 12px 0 20px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .commit-mail {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--gold-soft);
  word-break: break-all;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .cover-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .ecology-nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .version-board {
    grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .version-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 74px;
    height: 100%;
  }

  .page-about .version-link-line {
    width: 2px;
    flex: 1 1 auto;
    min-height: 60px;
    background: linear-gradient(180deg, var(--line-soft), var(--gold));
  }

  .page-about .version-link-dot {
    width: 10px;
    height: 10px;
    margin-top: 6px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 0 5px rgba(213, 166, 74, 0.15);
  }

  .page-about .version-list li {
    padding-left: 22px;
  }
}

@media (min-width: 900px) {
  .page-about .cover-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .cover-lead h1 {
    font-size: clamp(46px, 5.2vw, 68px);
  }

  .page-about .cover-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 10px 22px 18px;
  }

  .page-about .journey-svg {
    display: block;
    margin-top: 40px;
  }

  .page-about .journey-grid {
    grid-template-columns: var(--about-axis-w) minmax(0, 1fr);
    gap: 56px;
    margin-top: 26px;
  }

  .page-about .axis-list {
    display: block;
    overflow: visible;
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding: 0;
  }

  .page-about .axis-node {
    display: block;
    border: none;
    border-radius: 0;
    border-left: 1px solid var(--line-soft);
    padding: 12px 0 12px 18px;
    margin-bottom: 4px;
    white-space: normal;
    position: relative;
  }

  .page-about .axis-node::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 18px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--ink-900);
    border: 2px solid var(--gold);
    transition: background 0.25s var(--ease);
  }

  .page-about .axis-node:hover::before,
  .page-about .axis-node:focus-visible::before {
    background: var(--gold);
  }

  .page-about .axis-node:hover,
  .page-about .axis-node:focus-visible {
    background: transparent;
    border-color: var(--gold);
  }

  .page-about .axis-year {
    display: block;
    font-size: 22px;
    letter-spacing: 0.02em;
    line-height: 1.1;
  }

  .page-about .axis-name {
    display: block;
    margin-top: 4px;
    font-size: 12.5px;
    color: var(--mist);
  }

  .page-about .stage {
    padding: 34px 38px;
  }

  .page-about .stage--offset {
    margin-left: clamp(0px, 4vw, 62px);
  }

  .page-about .stage p {
    max-width: 46ch;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 46px;
    align-items: start;
  }

  .page-about .team-figure {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-about .commit-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
    gap: 50px;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-about .about-cover {
    padding: calc(var(--header-h) + 62px) 0 76px;
  }

  .page-about .journey,
  .page-about .team,
  .page-about .version,
  .page-about .ecology,
  .page-about .commit {
    padding-top: 78px;
    padding-bottom: 80px;
  }

  .page-about .journey-grid {
    --about-axis-w: 168px;
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .eco-node,
  .page-about .axis-node,
  .page-about .link-arrow {
    transition: none;
  }

  .page-about .eco-node:hover,
  .page-about .eco-node:focus-visible {
    transform: none;
  }
}
<<<END>>>